keep in mind unless some sort of encryption is used to authenticate between your clients machines and your network the NTLM auth request, which is what is used to authenticate will not be encrypted. Make sure you look into the details of the auth request for NTLM v 1 & 2 and see if there is encryption setting which you can enable otherwise your users credentials will be sent in plain text and for most organizations that is a risk which is not acceptable.I am currently looking into this myself as I am working on a new osTicket install with this as a potential requirement. if I find out anything I will post.